forumotion dose not have any virus if it is something showing up on your site then it is either a add or something someone has added to their forum.It can also be a false positive as well.

Run you scans and track down the sources. Bit it is nothing to with forumotion forums, they would not put virus on there forums... LOL

I ran a scan on your page and am not getting anything, so my guess is they are getting something come through from something that was added to a post or the site or ad some how?? Once again it could be a false positive as well. this happens a lot with people who use Norton.

Other then be sure you check anything you may be adding with coding or ad's, runs scans for your self as well. Or if you can get screens shots of the messages coming up or what the virus is?

Well make a global announcement that it is all false information and to ignore any spammers that get in spreading the garbage.

Then if you have a member that is unsure, tell them to come here and ask,Also be sure you ban the spammers/people that are spreading such nonsense.

As far as reporting this group, i am not sure if they are on a host or their own server, i guess you have to track down the domain, then do a little research on where to report them.. You can also call your service provider and ask them,

You know if they are on their own server it may be a little harder, plus someone just spamming and not really being able to prove if it's from this group or not can be a little hard as well, but report it anywhere you can.

Other then that just keep banning anyone that comes in spreading the nonsense.